SE 715/1-MS
Pmax: 3 bar tmax: 45 °C
SE 715/1-MS
Pmax: 3 bar tmax: 45 °C
SE 715/1-MS
Pmax: 3 bar tmax: 45 °C
SE 715/1-MS
Pmax: 3 bar tmax: 45 °C
SE 715-MS
Manual
Instructions for Use of the SE 715 Series Oxygen Sensors
1
Sensor connector (Memosens®)
2
19 mm A/F, serial number
3
PG 13.5 thread
4
Anode
5
Cathode
6
Membrane cap
7
ZU0939 adapter
!
WARNING – Failure to observe this warn-
ing may result in serious injury.
The safety alert symbol on the nameplate
means:
Read these instructions for use, observe the Spec-
ifications, and follow the Safety Instructions.
The SE 715-MS sensor is equipped with Memosens
technology. The benefits are a safe function due to
perfect galvanic isolation, digital data transmission
and an integrated sensor diagnostics, among others.
The connection is insensitive to dirt and humidity.
The calibration data, operating time, sensor desig-
nation, and serial number are stored in the sensor
head. The serial number is also printed in the quality
certificate and on the packaging label.
1 Safety Instructions
The sensor contains liquid electrolyte. Be sure to
wear safety goggles and gloves during mainte-
nance work, e.g., when replacing the membrane or
the electrolyte.
The sensor is designed to withstand a maximum
operating pressure of 3 bar and it meets the PED
requirements (Pressure Equipment Directive 97/23/
EC, Article 3, Sec. 3).
Please take extra care during installation to en-
sure that neither the polymer body nor the thread
(PG 13.5) suffer any damage.
2 Intended Use
The sensor is designed for simultaneous measure-
ment of dissolved oxygen and temperature in indus-
trial processes, particularly in the field of: drinking
water, wastewater, aeration, water processing, venti-
lation control, fish farming, aquariums.
3 Installation and Commissioning
• On unpacking, check the sensor for mechanical
damage. Report any damage to your Knick service
team.
• Remove the watering cap and briefly rinse the sen-
sor with clean water.
• Install the sensor in the fitting as described in the
user manual of the respective fitting or attach the
ZU0939 adapter for storing the sensor in a sensor
quiver of a portable meter from our Portavo series.
Be careful not to damage the sensor membrane.
• The sensor can be operated vertically or inclined up
to 15° off horizontal.
• Connect sensor and cable.
4 Operation
4.1 Calibrating the Sensor
A calibration in air is recommended for the SE 715
sensor. To do so, place the sensor in air. Rinse the sen-
sor with clean water and carefully dab the membrane
dry. Please refer to the user manual of the oxygen
transmitter for further details. The resulting calibra-
tion data (slope, temperature, time of calibration) are
saved directly in the sensor. Memosens sensors can
be precalibrated in the lab. Therefore, calibration on
site is not necessary.
4.2 Temperature Detector
The integrated temperature detector is intended for
automatic compensation of the measurement signal
and not for any high-precision and safe temperature
indication or control of the process temperature.
5 Maintenance and Cleaning
Observe the safety instructions given above when
performing maintenance work on the sensor.
5.1 Replacing the Membrane
Hold the sensor vertically and carefully screw off the
membrane cap. Fill a new membrane cap with elec-
trolyte (membrane caps and electrolyte ampoules in-
cluded in supply). Carefully screw the membrane cap
on again. Rinse the sensor with clean water.
5.2 Cleaning the Cathode
Visible deposits on the cathode can be removed with
fine sandpaper (included in supply). To do so, lay the
sandpaper on a horizontal surface and place a drop of
water on the paper. Remove the membrane cap from
the sensor and move the sensor in a circular motion
over the sandpaper. Hold the sensor vertically and
exert no pressure. Rinse the sensor with clean water,
fill a new membrane cap with electrolyte and careful-
ly screw the membrane cap on the sensor. Rinse the
sensor with clean water.
5.3 Cleaning the Anode
The anode (silver/silver chloride) has a brown to violet
color and does not require cleaning.
Clean the sensor with clean water after each produc-
tion cycle and regularly in case of heavy pollution.
6 Specifications
Model Code
The markings on each sensor or on the packaging
label include the following information:
SE 715/ 1 - MS
Model designation
Sensor connector
MS: Memosens®
Length
1: approx. 120 mm
Further Data
Measuring range
0 ... 20 mg/l
Resolution
20 µg/l
Temperature
-5 ... 45 °C
Pressure, relative
max. 3 bar
Membrane material silicone
Body material
polysulfone
Mounting
PG 13.5
Temp detector
NTC 30 kΩ
7 Package Contents
• Sensor
• Quality certificate
• User manual
• Maintenance kit, consisting of:
2 membrane caps
6 ampoules with electrolyte
Sandpaper
Tissue paper
• ZU0939 adapter for Portavo quiver
8 Disposal
Observe the applicable local or national regulations
for disposal.
A
ppr
ox. 120 mm
1
6
3
4
Ø 12 mm
2
Knick Elektronische Messgeräte
GmbH & Co. KG
Beuckestraße 22
14163 Berlin
Germany
Phone:
+49 30 80191-0
Fax:
+49 30 80191-200
Email:
Internet: www.knick.de
MEMO
SENS
5
7
